Materials created or accumulated by Lydia Dotto during her professional life. Includes published and draft articles and reports written by and about Dotto in different media; reviews of Dotto's books; research materials and interviews; video documentaries in which Dotto participated, collaborated, or accumulated for research purposes; drafts of speeches; awards and certificates received by Dotto throughout her career as a science and environmental journalist and writer; and related photographs and correspondence received by Dotto.

Materials relating to the professional and personal life of Lydia Dotto.

Materials relating to the research and teaching life of Dr. Ralph Chou. Includes materials on ocular safety, viewing solar eclipses, and safety standards and regulations. Also present is a collection of materials from the Science Teacher's Association of Ontario of which Dr. Chou was a member.

Three notebooks kept by Thomas P. Stowell with mathematical problems, solutions, and notes.